Efficient market hypothesis: an experimental study with uncertainty and asymmetric information

2019 ◽  
Author(s):  
Mondher Bouattour ◽  
Isabelle Martinez
Keyword(s):  
Experimental Study ◽  
Asymmetric Information ◽  
Efficient Market Hypothesis ◽  
Efficient Market

scholarly journals An approach of spectrum analysis to the stock prediction

2020 ◽  
Author(s):  
James L. Luo
Keyword(s):  
Game Theory ◽  
Asymmetric Information ◽  
Capital Markets ◽  
Spectrum Analysis ◽  
Efficient Market Hypothesis ◽  
Human Action ◽  
Efficient Market ◽  
New Approach ◽  
Validity Test ◽  
Lot Sizes

This article constructs a brand new approach to the prediction of capital markets in the perspective of Volume Spectrum Analysis (VSA). Unlike all traditional financial theories, the model of VSA features volume rather than price and focuses on its inner structure, i.e. the distribution of lot sizes that reveals asymmetric information in trading, which rejects the assumption of perfect information in Efficient Market Hypothesis (EMH) and makes the validity test possible. The flaw of modern finance, that is, taking the normality of price changes for granted, and those of other solutions such as game theory, are investigated to show why it is only VSA that may capture the essence of human action in capital markets.

scholarly journals KETERBUKAAN INFORMASI UU PASAR MODAL MENCIPTAKAN ASYMMETRIC INFORMATION DAN SEMI STRONG FORM

2021 ◽  
Vol 50 (1) ◽  
pp. 106-118
Author(s):  
Suwinto Johan ◽  
Ariawan Ariawan
Keyword(s):  
Asymmetric Information ◽  
Efficient Market Hypothesis ◽  
Strong Form ◽  
Efficient Market

Sebuah pasar modal digolongkan sebagai pasar yang efisien atau akurat jika informasi yang ada di bursa tersebut terbuka dan diketahui oleh semua pelaku secara merata. Undang Undang No. 8 Tahun 1995 mewajibkan keterbukaan informasi material dengan jangka waktu maksimal 2 hari kerja setelah adanya informasi yang material. Penelitian ini bertujuan untuk meneliti keterkaitan antara kewajiban keterbukaan informasi material dengan mewujudkan pasar modal yang efisien berdasarkan Efficient Market Hypothesis. Penelitian ini menggunakan metode yuridis normatif. Penelitian ini menemukan bahwa kewajiban pelaporan maksimal 2 hari kerja akan mengakibatkan keterlambatan informasi bagi pelaku pasar modal. Pasar modal yang tidak efisien tidak akan membuat pengembalian yang optimal. Pengaturan mengenai pelaporan informasi yang material perlu dirubah.

Value Migration in the Context of Efficient Market Hypothesis

2009 ◽  
Vol 3 (1) ◽  
pp. 49-55
Author(s):  
Wiesław M. Grudzewski ◽  
Irena K. Hejduk ◽  
Dariusz Siudak
Keyword(s):  
Efficient Market Hypothesis ◽  
Efficient Market

An Empirical Study on Efficient Market Hypothesis with reference to FMCG Sector

GIS Business ◽  
2020 ◽  
Vol 15 (1) ◽  
pp. 109-126
Author(s):  
Nitin Tanted ◽  
Prashant Mistry
Keyword(s):  
Stock Prices ◽  
Stock Price ◽  
Abnormal Returns ◽  
Weak Form ◽  
Efficient Market Hypothesis ◽  
Controversial Issues ◽  
Efficient Market ◽  
Price Movements ◽  
Run Test ◽  
Stock Price Movements

One of the highly controversial issues in the area of finance is “Efficient Market Hypothesis”. Efficient Market Hypothesis states that, “In an efficient market, all available price information is reflected in the stock prices and it is not possible to generate abnormal returns compared to other investors.” A lot of studies conducted previouslyto test the Efficient Market Hypothesis, confirmed the theory until recent years, when some academicians found it to be non-applicable in financial markets. According to them, it is possible to forecast the stock price movements using Technical Analysis. The results of various studies have been inconclusive and indefinite about the issue. This study attempted to test the efficiency of FMCG Sector stocks in India in its weak form. For the study, closing prices of top 10 stocks from Nifty FMCG index has been taken for the 5-year period ranging from 1st October 2014 to 30th September 2019. Wald-Wolfowitz Run test has been used to test the haphazard movements in the stock price movements. The results indicated that FMCG sector stocks does support the Efficient Market Hypothesis and exhibit efficiency in its weak form. Hence, it is not possible to accurately predict the price movements of these stocks.

Non-Linearity and Chaotic Behaviour in Cyprus Stock Market

2015 ◽  
Vol 5 (4) ◽  
Author(s):  
Athina Bougioukou
Keyword(s):  
Lyapunov Exponent ◽  
Stock Market ◽  
Chaos Theory ◽  
Linear Dependence ◽  
Chaotic Behavior ◽  
Efficient Market Hypothesis ◽  
Chaotic Behaviour ◽  
Maximum Lyapunov Exponent ◽  
Efficient Market ◽  
General Index

The intention of this research is to investigate the aspect of non-linearity and chaotic behavior of the Cyprus stock market. For this purpose, we use non-linearity and chaos theory. We perform BDS, Hinich-Bispectral tests and compute Lyapunov exponent of the Cyprus General index. The results show that existence of non-linear dependence and chaotic features as the maximum Lyapunov exponent was found to be positive. This study is important because chaos and efficient market hypothesis are mutually exclusive aspects. The efficient market hypothesis which requires returns to be independent and identically distributed (i.i.d.) cannot be accepted.

Robust Approach to Verifying the Weak Form of the Efficient Market Hypothesis

2011 ◽  
Author(s):  
Luboš Střelec ◽  
Theodore E. Simos ◽  
George Psihoyios ◽  
Ch. Tsitouras ◽  
Zacharias Anastassi
Keyword(s):  
Weak Form ◽  
Efficient Market Hypothesis ◽  
Efficient Market ◽  
Robust Approach
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